>3k3aB (B:) observed residues (from ATOM records)
pewtyprlscpgstfqkallisphrfgetkgnsapliirepfiacgpkeckhfalthyaa
qpggyyngtrgdrnklrhlisvklgkiptvensifhmaawsgsachdgkewtyigvdgpe
nnallkikygeaytdtyhsyannilrtqesacnciggncylmitdgsasgisecrflkir
egriikeifptgrvkhteectcgfasnktiecacrdnsytakrpfvklnvetdtaeirlm
ctetyldtprpddgsitgpcesngdkgsggikggfvhqrmaskigrwysrtmsktkrmgm
glyvkydgdpwtdsdalalsgvmvsmeepgwysfgfeikdkkcdvpcigiemvhdggket
whsaataiyclmgsgqllwdtvtgvdmal